/*
 * Copyright 2010 Askar Kalykov, oxygene.core@gmail.com
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */

package com.oxygenecore.util;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.ArrayList;
import java.util.List;

/**
 * @author Askar Kalykov
 *         Date: 15.09.2010
 *         Time: 23:37:07
 */
public class CompositeProxy<T> {
    private List<T> delegates = new ArrayList<T>();
    private Class<T> clazz;

    public CompositeProxy(Class<T> clazz) {
        this.clazz = clazz;
    }

    public void add(T delegate){
        delegates.add(delegate);
    }

    public T buildProxy(){
        return (T)Proxy.newProxyInstance(CompositeProxy.class.getClassLoader(), new Class[]{clazz}, new InvocationHandler() {
            public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                for (T delegate : delegates) {
                    method.invoke(delegate, args);
                }
                return null;
            }
        });
    }
}
